package com.zcl.system.config;

import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import org.apache.ibatis.reflection.MetaObject;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.time.LocalDateTime;

@Configuration
@MapperScan("com.zcl.system.mapper")
public class MybatisPlusConfig implements MetaObjectHandler {
//    配置类,例如分页插件等
    /**
     * 新的分页插件,一缓和二缓遵循mybatis的规则,需要设置 MybatisConfiguration#useDeprecatedExecutor = false 避免缓存出现问题(该属性会在旧插件移除后一同移除)
        分页插件,官网复制
     */
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return interceptor;
    }
    //实现MetaObjectHandler接口,可以让实体类的创建,修改日期实现自动填充
        //插入表数据时的自动填充
    @Override
    public void insertFill(MetaObject metaObject) {
        //自动填充方法
        //(原数据对象,字段名,字段类型,字段值)
        this.strictInsertFill(metaObject,"create", LocalDateTime.class,LocalDateTime.now());
        this.strictInsertFill(metaObject,"update", LocalDateTime.class,LocalDateTime.now());
    }
        //修改表数据时的自动填充
    @Override
    public void updateFill(MetaObject metaObject) {
        this.strictInsertFill(metaObject,"update", LocalDateTime.class,LocalDateTime.now());
    }
}
